<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
	</head>
	<body>
	
		<script>
		//标签名
			var arr1 = [1,2,3,4,5,6];
			var arr2 = [1,2,3,4,5,6];
			loop1:for( var k in arr1 ){
				//数组名[下标(序号)]
				loop2:for( var j in arr2 ){
					if ( arr2[j] == 4){
						break loop2;
					}
					document.write(arr1[k] + "*" +  arr2[j] + "</br>");
				}
				
			}
			
		/*
		 
		 * try{
		 * 	
		 * }catch(e){
		 * 	
		 * }finally{
		 * 	
		 * }
		 * */
		</script>
		
	</body>
</html>
